Split switch.



No. 869,298. PATENTED0GT. 29. 1907.

, G. M. BRVIN.

SPLIT SWITCH.

APPLICATION FILED APRQZZ, 1905.

- WITNESSES UNITED STATES PATENT OFFICE.

GEORGE M. ERVIN, OF .TOHNSTOWN, PENNSYLVANIA, ASSIGNOR TO THE LORAINSTEEL COMPANY, A CORPORATION OF PENNSYLVANIA.

SPLIT SWITCH.

Specification of Letters Patent.

Application filed April 22(1905- Serial No. 256,845.

Patented Oct. 29, 1907'.

To all whom it "may concern:

Be it known that I, GEORGE M. ERVIN, of Johnstown, in the county ofOambria and State of Pennsylvania, have invented a new and usefulImprovement in Split Switches, of which the following is a full, clear,and exact description, reference being had to the accompanying drawings,which form a part of this specification.

My invention has relation to split switches of that type in which thepoint rails are provided with renewable point portions of more durablematerial.

The object of my invention is to provide a switch of this type in whichthe point portions are rigidly and securely fastened to the point railsin such a manner that they can be readily removed and replaced.

With this object in view, my invention consists in the novelconstruction, arrangement and combination of parts, all substantially ashereinafter described and pointed out in the appended claims referencebeing had to the accompanying drawing, in which Figure l is a plan viewof a switch embodying my invention; Fig. 2 a detail plan view of aportion of one of the point rails; Figs. 3 and 4, sections on the lines33, and 44 respectively of Fig. 1.; and Fig. 5, a view similar to Fig.4, but showing a slight modification.

The letters A. A. designate the stock rails, B, B, the point railshaving the removable points O, O, D, the tie rods which connect thepoint rails, and E, the usual slide plates on which the point rails seatand move.

The removable points O preferably extend back to a point slightly beyondwhere their heads come to the full rail width, and are then bifurcatedto form seats for the ends of the rails B, B, the arms 0 of thosebifurcations embracing the webs of the said rails B in the manner shownin the drawing, and secured by the rivets d, or by bolts. The points Oare preferably castings of a very hard and durable steel, such asmanganese steel,

and are made of a section (see Fig. 3) such that they fit under theheads of the adjacent stock rails A. This gives them a rigid reinforcedsection which prevents the points from breaking down, and one which is,independent of the character of steel used, much stiffer than the usualpoint rail which is formed by planing a T-rail. To still further stiffenthe joint between the points O, and the rails B, one of the arms 0 maybe formed with a base portion 0 which extends under the base of the railB, as shown in Fig. 5.

In Fig. 2 I have shown the joint at h, between the head portions of thepoint O and rail B as formed obliquely, in order that the car wheels maypass more gradually from one surface to the other.

The points C may be removed by removing the bolts or rivets d, and a newpoint can be quickly applied.

Having thus described my invention, what I claim as new and desire tosecure by Letters Patent is:

1. In a split-switch, a point rail proper which termi nates back of thepoint of the switch, and a separate point of harder material removablysecured to the said point rail, said point being of the full depth ofthe rail and having a head which is of the full width of the rail headfor a portion of its length and is of decreasing" \vidth during theremainder of its length. said point also having bifur- (rated arms whichembrace the point rail and fit its head GEORGE M. ERVIN.

Witnesses Loim'r'ro' M. OCoNNnLL, H. W. SMIIII.

